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213905194480 = 24513120410801
BaseRepresentation
bin1100011100110110111…
…1100011110111110000
3202110010102100202100101
43013031233203313300
512001034212210410
6242133334402144
721311525103415
oct3071557436760
9673112322311
10213905194480
11827979a666a
1235558500354
131722c0b59c3
14a4d2b5a10c
15586e0cbd3a
hex31cdbe3df0

213905194480 has 40 divisors (see below), whose sum is σ = 501126010704. Its totient is φ = 84908928000.

The previous prime is 213905194471. The next prime is 213905194511. The reversal of 213905194480 is 84491509312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 213905194480.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10194921 + ... + 10215880.

Almost surely, 2213905194480 is an apocalyptic number.

213905194480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213905194480 is an abundant number, since it is smaller than the sum of its proper divisors (287220816224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213905194480 is a wasteful number, since it uses less digits than its factorization.

213905194480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20410945 (or 20410939 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 213905194480 in words is "two hundred thirteen billion, nine hundred five million, one hundred ninety-four thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 131 262 524 655 1048 1310 2096 2620 5240 10480 20410801 40821602 81643204 102054005 163286408 204108010 326572816 408216020 816432040 1632864080 2673814931 5347629862 10695259724 13369074655 21390519448 26738149310 42781038896 53476298620 106952597240 213905194480